Perfect-rated BBC period drama Little Dorrit is available to stream now. Also featuring early performances by Claire Foy and Matthew Macfadyen, the story focuses on Amy Dorrit, a member of a family whose lives revolve around London's Marshalsea prison for debtors. BBCRelated: Best streaming servicesAlongside Foy as Amy and Macfadyen as Arthur, Johnston – who can currently be seen in new comedy series Ann Droid – takes on the role of Affery Flintwinch. What to Read NextThe series earned a perfect 100% fresh score on Rotten Tomatoes based on 10 reviews, and is Johnston's joint highest-rated show alongside Ann Droid and Truelove. Meanwhile, Ann Droid – which Digital Spy called "sharp, witty and gorgeously funny" – is also streaming on iPlayer.